LEADING Brexiteer Iain Duncan Smith trashed Theresa May's Brexit proposals despite claiming he supports the Prime Minister's leadership as he belittled calls for a second referendum.

In an interview with Piers Morgan on ITV's Good Morning Britain, the Tory MP claimed Mrs May's Chequers proposals do not deliver on the Brexit Britons voted for.

Mr Duncan Smith argued Monday's amendment to the Prime Minister's White Paper could put the UK in a position of strength against the EU in the negotiations but that it was time Remainer MPs stopped calling for a second referendum.

Piers Morgan asked the Tory Brexiteer: “The problem seems to me that this is already watered down from what most people assumed Brexit would be.

“Then it would get significantly watered down further by the EU who sense that we’re weak and vulnerable and you end up with something - and I say this as a Remainer - which to me cannot in any way be described as Brexit.”